William v



(No Model.)

W. V. THRELFALL.

DRAWING FRAME.

Patented Dec. 31, 1895.

J 6.. e WM Hlll ill @i ii 3 a a e h |rH lull 1 2 MIN H MU Hliw H w H IlMNH ,5 I w T m W w m/ NTTED STATES PATENT OFFICE,

lVlLLIAM V. THRELFALL, OF NEWVTON, MASSACHUSETTS, ASSIGNOR TO THE PETTEEMACHINE WVORKS, OF SAME PLACE.

DRAWlNG-FRAM E.

SPECIFICATION forming part of Letters Patent No. 552,339, dated December31, 1895. Application filedAugust 1,1894. Serial No. 519,164. (Nomodel.)

T at whom it may concern:

Be it known that I, WILLIAM V. THREL- FALL, a citizen of the UnitedStates, residing at Newton Upper Falls, in the county of MiddleseX andState of Massachusetts, have in vented a new and useful Improvement inDrawing-Frames, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, formingapart of this specification,in explaining its nature.

Drawing-frames for drawing sliver have a number of pairs ofdrawing-rolls, each of which draws the sliver as it is run through them,the rolls rotating at different surface speeds. Heretofore these rollshave been generally held in open bearings in order that they may bereadily removed, and there is a tendency upon the part of the lowerrolls to occasionally ride upward in these open bearings. This islargely due to the manner in which they are geared together; but it isdesirable to provide the open bearings because it is necessary that therolls should be easily removed from time to time, and it also forms acheap construction; and my invention relates to means whereby the lowerrolls are held in place in their bearings, the said means comprisingflat plates secured to the frames or supports for the roll-shafts in amanner to bear upon the shafts of the lower rolls, and also to bemovable and adjustable crosswise them, both for the purpose of easilybringing the plates to a bearing and for the purpose of taking up wearas it occurs.

Referring to the drawings, Figure 1 is a view principally in endelevation of so much of a drawing-frame as is necessary to show thefeatures of my invention. Fig. 2is aview in plan thereof. 7

A A are the bearing-blocks for the rolls, four pairs of which are shown,and they are lettered respectively B B, O O, D D, E E, and each pair isheld in open bearings in the said blocks A A, the said bearings beingrespectively Z) c d e in each block. The lower rolls are geared in anydesired way. The

usual way is that represented in the drawings, I

and their shafts are extended beyond the blocks A A to receive theconnecting-gears.

The shaft 6' of the roll E has the driving-gear e which meshes with theintermediate gear 6 which in turn meshes with the gear d on the shaft 61of the roll D. The shaft c has at the end opposite that carrying thegear 6 the gear 6 which meshes directly with the gear 0 on the shaft 0of the roll 0. The roll 13 has the gear 1) upon its shaft 19 which isdriven by the gear 11 The ends of the shafts of the upper rolls do notextend beyond the outer edges of the bearing-blocks A A. Consequentlythis affords a space for the placing of the plates F F. Each of theseplates bears by its lower edge f upon the shafts 6, b 0 and (Z and eachis secured to the outer side of its respective block by means of ascrewstud f extending through a slot f and a nut and washer f the studextending into the side of the block and the plate being adjustable uponit lengthwise the slot f These are located at the forward ends of theplates. Each of the rear ends of the plates has an inclined uppersurface f which extends under a pin or stud f, projecting outward fromthe side of the bearing-block and it serves to hold down that end of theplate, each plate being held with its edge f in contact with therollshafts by the stud f at one end and the pin f at the other, and bymeans of the slot 1" and the incline f 3 each plate is brought to abearing relation to the shafts and is maintained in such relation,thereby requiringbut little care in the fitting, also providing for anadjustment for wear and also providing means whereby the plates may beeasily re- 8 5 moved, thereby releasing all the shafts at the same time.

Another advantage arises from the fact that the plates may be set at anydesired tension upon the shafts and that they may be set to 0 bear withbut little friction, and that they absolutely prevent the rolls fromriding up in their open boxes.

Having thus fully described my invention,

I claim and desire to secure by Letters Pat- 9 5 cut of the UnitedStates 1. Ina drawing frame, in combination with the blocks A A and thelower rolls having shafts extending beyond the outer edges of saidblocks, the shaft holding plates F F se- IOO cured to the blocks uponthe outer side of each block and hearing by their edges upon the shaftsof the lower rolls which project beyond the outer surfaces of saidblocks, as and for the purposes described.

2. The combination in a machine of the character specified, of thebearing blocks A A having open bearings for the upper and lower drawingrolls, with the plates F F to bear upon the shafts of the lower rolls,the said plates being vertically adjustable, as and for the purposesdescribed.

3. The combination in a machine of the character specified, of thedrawing rolls, the lowerof which are positively driven an d have shaftsextending beyond their bearing blocks, with the shaft holders F Fhorizontally and vertically movable in relation to the shafts, as andfor the purposes described.

a. The combination in a machine of the character specified of thedrawing blocks A, A, the upper and lower drawing rolls, the latterhaving shafts extending beyond the bearing blocks and the detachableshaft holding plates F, F, resting on the shafts of the lower rolls, asand for the purposes described.

5. 111 a machine of the character specified, the combination of thebearing blocks, the drawing rolls, the shafts of the lower of whichextend beyond the bearing blocks, the plates F F each having the slots fand inclined surface f {with the screw studs f passing through the slotsand nuts carried thereby to clamp the plates in place and the pins fco-acting with the inclined surfaces f, as and for the purposesdescribed.

G. In a machine of the character specified, the combination with thebearing blocks and lower rolls having shafts extending beyond thebearings, of the plates F F movable horizontally and means fordepressing them as they are moved horizontally, as and for the purposesdescribed.

\VILLIAM V. 'lIIREL'IL XLL.

\Vitnesscs:

F. F. RAYMOND, 2d, J. M. DOLAN.

